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    <script>
     //有一个包含工资的数组[1500,1200,2000,2100,1800],要求把数组中超过2000的删除，剩余的放到，新的数组里边
     var arr = [1500,1200,2000,2100,1800];
     var newArr = [];
     for (var i = 0; i < arr.length; i++) {
         if (arr[i] < 2000) {
             //newArr[newArr.length] = arr[i]; 
             newArr.push(arr[i])
         }
     }
     console.log(newArr)

     var arr2 = [4, 6, 7, 10, 42, 5, 8, 9];
     var newArr1 = [];
     for (var i = 0; i < arr2.length; i++) {
         if (arr2[i] < 10) {
             //newArr1[newArr1.length] = arr2[i]
             newArr1.push(arr2[i]);
         }
     }
     console.log(newArr1);

     var arr3 = [3, 5, 7, 32, 53, 2, 64, 8];
     var newArr3 = [];
     for(var i = 0; i < arr3.length;i++){
         if(arr3[i] < 10) {
             newArr3.push(arr3[i])
         }
     }
     console.log(newArr3)
    </script>
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